CVE-2025-4087

MEDIUM EPSS 16.9%
Published Apr 29, 20251y ago · Modified Jun 17, 20261w ago
4.8 CVSS 3.1
Medium
Find Similar
Published Apr 29, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Thunderbird 138, and Thunderbird 128.10.

CVSS Details

Base Score
4.8
Exploitability
2.2
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
16.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 4

VendorProductVersionRange
mozillafirefox* <128.10
mozillafirefox* <138.0
mozillathunderbird* <128.10.0
mozillathunderbird* <138.0

References 6

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1952465
    Permissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-28/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-29/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-31/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-32/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.